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Commitments And Contingencies (Narrative) (Details) $ in Thousands, zł in Millions	3 Months Ended
	Mar. 31, 2018 PLN (zł)	Mar. 31, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2013
Commitments and Contingencies [Line items]
Contingent liability			$ 1,905	$ 1,833
Lot Polish Airlines Invesment [Member]
Commitments and Contingencies [Line items]
Owned by noncontrolling interest	33.30%		33.30%		33.30%
Awarded arbitration	zł 1.2	$ 400
Casinos Poland Ltd [Member]
Commitments and Contingencies [Line items]
Income tax audit costs	zł 9.4	2,900
Century Downs Racetrack And Casino [Member]
Commitments and Contingencies [Line items]
Owned by noncontrolling interest	25.00%		25.00%
Review of Tax Years 2012 and 2013 [Member]
Commitments and Contingencies [Line items]
Income tax audit costs	zł 4.9	$ 1,400
Review of All Tax Open Periods [Member]
Commitments and Contingencies [Line items]
Contingent liability	zł 6.5		$ 1,900

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Commitments and Contingencies [line items]

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Carrying amount of reserve for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid within one year of the date of the statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 55
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6396582&loc=d3e15243-108350

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